libxfs-apply: minor improvements

Three quick improvements to libxfs-apply:

- Skip already-cross-merged commits, based on the
  "Source XXX commit" line in the commitlog.

- Be clearer about which patch failed if it does

- Clean up guilt better after a failed application

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
1 file changed